Historical clue formulations

• Pitchman who said "It has more seats than the Astrodome!" — 2010-10-15
• Fictional salesman of '80s ads — 2007-08-11
• Liar in old car ads — 1995-08-18
• Mendacious salesman of old car ads — 1995-03-21
• Famous TV liar — 1994-04-02